Well for as long as I can remember I have had dry, cracked looking skin kind of like a rash on my left wrist and hand. I chalked it up to psoriasis (a doc told me thats what it was in my twenties) Well 9 years later I quit smoking....and I just realized it is gone...my hand and wrist look NORMAL....holy crap....I didn't see that coming. I'm smiling like a goof over here.